Portable compressor



1933' w. PRELLWITZ PORTABLE COMPRESSOR Filed Oct. 2, 1931 I N VEN TOR.

Willi mPncllwitg. BY 2 Z H15 ATTORNEY.

Patented Apr. 18, 1933 UNITED STATES PATENT OFFICE WILLIAM rnELLwIraoEEAS'I'ON, PENNSYLVANIA, ASSIGNOR 'ro INGEEsOLLQEAND 7' COMPANY, orJERSEY CITY, NEw JERSEY, A- CORPORATION on NEW JERSEY 1 PORTABLECOMPRESSOR This invention relates to compressor outfits, but moreparticularly to a portable compressor outfit in which the compressor andthe motor whereby it is driven are arranged 5 within the same housing.

One object of the invention is to prevent the heat radiating from thecompressor and the motor from commingling with the intake air supply tothe compressor.

Another object is to assure an uncontaminated intake air supply of thelow-est possible temperature.

Other objects will be in part obvious and in part pointed outhereinafter.

In the accompanying drawing illustrating the invention and in whichsimilar reference characters refer to similar parts,

Figure 1 is a side elevation partly broken away of a portable compressoroutfit having the invention applied thereto, and

Figure 2 is a transverse view through Figure 1 on the line 22 looking inthe direction indicated by the arrows.

Referring moreparticularly to the drawing, A designates generally aportable compressor outfit and B a housing of which the roof O and anend wall D are indicated. The roof O serves as a protective covering fora compressor E which may be operatively connected, in a well knownmanner, to an internal combustion engine F whereby it is driven. Theinternal combustion engine-F is shown provided with the usual exhaustpipe G which may extend upwardly through the roof O and into an exhaustdeflector I-I mounted on the roof.

On the end of the compressor, as for instance exteriorly of the wall D,is a storage receiver tank J which is connected to the compressor E by asuitable discharge pipe K through which the fluid compressed by thecompressor may pass to the tank J.

Superimposed upon the tank J, or upon a bracket L mounted above the tankJ, is a second tank O to serve as a storage for the fuel used foroperating the engine F.

In accordance with the practice of the invention, means are provided toassure an uncontaminated air supply to the compressor and at theprevailing atmospheric tempera- S which supports a cover or roof T forthe I opening Q. The members comprising the frame S are suitably spacedwith respect to each other to define openings U for the passage ofthe'air to the inlet openings R. Secured to the frame S, in any wellknown manner to overlie the openings U, are screens V to strain foreignmatter, su'ch as dust, from the air flowingv therethrough. Additionalmeans may, however, beprovided to cleanse the air pumped bythecompressor, as for instance, filters W which lie beneath the roof Tand are secured to the intake pipe P for removing from the air suchforeign matter as may pass through the screens V.

Preferably a baffle X is disposed on the roof C between the exhaustdeflector H and the opening U adjacent thereto to prevent the flow ofexhaust gases to the intake openings of the compressor.

The means provided for preventing the radiation of heat from thecompressor and its prime mover to the inlet openings R comprises ashield device designated generally by Y and consisting of a pair ofplates Z and b which are slightly spaced with respect to each other toform therebetween an air gap or space 0.: The plates Z andb extendtransversely of the housing to form a compartment at in the upperportion and in one endof the housing and thus isolate the filters'W 7and the inlet openings R from the remainder of the interior of thehousingB.

The plates may besecured to the housing in any convenient manner, as forinstance by boltse, which extend through flanges f and g of the plates.Z and 7) respectively and through the side wall of the housing B. Oneend of the plates "Z and b may be, seated 1 ceive air therefrom, a roofoverlyin the aperture, and a shield cooperating wit the housing toprevent the flow of heat from the motor and the compressor to the inletopenlng.

. In testimony whereof I have signed this specification.

WILLIAM PRELLW'ITZ.

covers 0 which may be suitably secured to the:

plates Z and b and have apertures i -therein to receive the body of thepipe P.

As an additional precaution intended to prevent heated air, such as thatflowing from the engine, from being drawn toward the openings U, bafflesq are arranged on opposite sides of the roof C along which they extend.The baflles 9 may be suitably joined at one end to the baffle X an attheir other end to a bafile r at the end of the roof C. Suitable drainholes 8 may be formedin the baffles 'q and said bafiies are convenientlysecured to the housing B by the bolts 0.

In practice the present invention has been found to be highly efficient.This is due to the facts that only atmospheric air at the normalprevailing temperature is drawn into the compressor E and that the airis supplied to the intake openings R at a point Where the supply isleast apt to become contaminated by dust and the like which may beplaced in circulation in the air during the course of the work. This isparticularly true when performing such work as tie-tamping wherewithcompressors of'this type are generally employed to supply the pressurefluid for motivating the tampers. As is well known the tamping materialis usually of a dry nature so that a considerable amount of dust isreleased from the mass byt-he tamper and agitated by the exhaust fluidissuing therefrom.

The present invention has been found to not only assure a clean airsupply to the compressor but also to be highly effective as a meansforpreventing the initial'temperature of the atmospheric air from beingincreased by the exhaust gases issuing from the engine or by the heatradiating from the engine and the compressor.

I claim:

1. A portable compressor outfit comprising a housing,a compressor in thehousing, a motor in the housing to drive the compressor an air intakedevice for the compressor having an inlet opening above the compressorand the motor, and means for preventing the heat radiating from thecompressor and the motor from mingling with the air flowing to theintake opening. 1

'2. A portable compressor outfit comprising a housing having an aperturein the top thereof, a compressor in the housing, a motor in the housingto drive thecompressor, an air intake device for the compressor. havingan inlet opening adjacent the aperture to re-

